#!/bin/bash

TITLE="This is title" #Khong duoc. co' dau' cach' , phai? giong' het. the' nay
echo  TITLE
echo $TITLE
echo "Title la : $TITLE"
echo 'Title la : $TITLE' #su. khac' biet. giua~ " ' "   va`  " " "
echo "Title la : \$TITLE" #cach' dung` " \ " 
echo "$HOSTNAME" #co' cac' global bien' co' san~ , de? xem tat' ca? cac' bien' global thi` vo terminal go~ lenh. $printenv
echo $(man echo)
echo $(date +"%x %r %Z") #cac' command co' tham so' thi` phai? dung` "()" hoac. "` `" de chuyen` tham so', chu' y' dau' + o? day la` tham so' truyen` vao` cua? lenh. date
echo `date +"%x %r %Z"` #cac' command co' tham so' thi` phai? dung` "()" hoac. "` `" de chuyen` tham so', chu' y' dau' + o? day la` tham so' truyen` vao` cua? lenh. date
time_now=$(date +"%x %r %Z") # co' the? gan' command voi' 1 bien'
echo $time_now
